Digital quantum simulations of scattering in quantum field theories using W states
ORAL · Invited
Abstract
High-energy particle collisions can convert energy into matter through the inelastic production of new particles. Quantum computers provide a natural platform for simulating the resulting out-of-equilibrium dynamics that are difficult for classical computing methods. In this talk, I will present results from simulations of scattering in 1D Ising field theory performed on 104 qubits of IBM’s quantum processors. We show that measurements of the energy-density skewness in the post-collision state serve as a clear diagnostic for the presence of an inelastically produced particle. Integral to these simulations is a new, efficient method for wavepacket preparation that builds on recent advances in W-state initialization using mid-circuit measurement and feedforward. I will also discuss progress toward extending these simulations to two dimensions, which would open a new regime of field-theoretic dynamics beyond the reach of classical computation.
*I acknowledge support from the U.S. Department of Energy QuantISED program through the theory consortium "Intersections of QIS and Theoretical Particle Physics" at Fermilab, from the U.S. Department of Energy, Office of Science, Accelerated Research in Quantum Computing, Quantum Utility through Advanced Computational Quantum Algorithms (QUACQ), and from the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (PHY-2317110). I also acknowledges support from a Burke Institute prize fellowship. I acknowledge the use of IBM Quantum Credits for this work and this research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 using NERSC award NERSC DDR-ERCAP0034353.
